<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>css3动画入门</title>

  <link rel="stylesheet" href="css/h3.css">
</head>

<body>
  <!-- 动画一 -->
  <span class="sp01">鼠标悬停效果！</span>

  <!-- 动画二 -->
  <div class="box01">过渡动画效果</div>


</body>

</html>